<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
ul{
    list-style: none;
    list-style-type: circle;
}


    </style>
</head>
<body>
<ul>
    <li>定义列表</li>
    <li>定义列表</li>
    <li>定义列表</li>
    <li>定义列表</li>
    <li>定义列表</li>
</ul></body>
</html>
